{"id":66800,"date":"2025-05-03T12:29:00","date_gmt":"2025-05-03T04:29:00","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66800\/"},"modified":"2025-05-03T12:29:00","modified_gmt":"2025-05-03T04:29:00","slug":"java%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e7%9a%84%e4%b8%aa%e6%95%b0%e6%80%8e%e4%b9%88%e8%8e%b7%e5%be%97-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66800\/","title":{"rendered":"java\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\u600e\u4e48\u83b7\u5f97"},"content":{"rendered":"<blockquote><p>\n  \u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u4e2a\u6570\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a\u2460 \u4f7f\u7528 array.getlength() \u8fd4\u56de\u884c\u6570\uff0c\u518d\u83b7\u53d6\u6bcf\u4e2a\u884c\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\uff1b\u2461 \u4f7f\u7528 length \u5c5e\u6027\u5206\u522b\u83b7\u53d6\u884c\u6570\u548c\u5217\u6570\u3002\u901a\u8fc7\u8fd9\u4e24\u65b9\u6cd5\uff0c\u53ef\u4ee5\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\uff0c\u5373\u884c\u6570\u4e0e\u5217\u6570\u7ec4\u6210\u7684\u4e58\u79ef\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111710271882479.jpg\" class=\"aligncenter\" title=\"java\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\u600e\u4e48\u83b7\u5f97\u63d2\u56fe\" alt=\"java\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\u600e\u4e48\u83b7\u5f97\u63d2\u56fe\" \/><\/p>\n<p><strong>Java\u4e2d\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570<\/strong><\/p>\n<p>\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\uff0c\u5373\u8868\u793a\u6570\u7ec4\u4e2d\u7684\u5b50\u6570\u7ec4\u7684\u6570\u91cf\u3002\u83b7\u53d6\u6b64\u4fe1\u606f\u7684\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p><strong>\u4f7f\u7528Array.getLength()\u65b9\u6cd5<\/strong><\/p>\n<p>\u5bf9\u4e8e\u4e8c\u7ef4\u6570\u7ec4\uff0cArray.getLength()\u65b9\u6cd5\u8fd4\u56de\u6570\u7ec4\u4e2d\u7b2c\u4e00\u7ef4\u7684\u957f\u5ea6\uff0c\u5373\u884c\u6570\u3002\u56e0\u6b64\uff0c\u8981\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\uff0c\u9700\u8981\u518d\u83b7\u53d6\u6bcf\u4e2a\u884c\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int rowCount = array.length; \/\/ \u83b7\u53d6\u884c\u6570\nfor (int rowIndex = 0; rowIndex &lt; rowCount; rowIndex++) {\n    int columnCount = array[rowIndex].length; \/\/ \u83b7\u53d6\u6bcf\u4e00\u884c\u7684\u5217\u6570\n    \/\/ \u6839\u636e\u9700\u8981\u8fdb\u884c\u64cd\u4f5c\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528length\u5c5e\u6027<\/strong><\/p>\n<p>\u5bf9\u4e8e\u6570\u7ec4\u4e2d\u6bcf\u4e00\u7ef4\uff0c\u53ef\u4ee5\u4f7f\u7528length\u5c5e\u6027\u83b7\u53d6\u5176\u957f\u5ea6\u3002<\/p>\n<pre>int rowCount = array.length; \/\/ \u83b7\u53d6\u884c\u6570\nint columnCount = array[0].length; \/\/ \u83b7\u53d6\u7b2c\u4e00\u884c\u7684\u5217\u6570<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u5047\u8bbe\u6709\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\uff1a<\/p>\n<pre>int[][] array = {\n    {1, 2, 3},\n    {4, 5, 6},\n    {7, 8, 9}\n};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u53ef\u4ee5\u83b7\u53d6\u6570\u7ec4\u7684\u4e2a\u6570\uff1a<\/p>\n<pre>int rowCount = array.length; \/\/ \u83b7\u53d6\u884c\u6570\nint columnCount = array[0].length; \/\/ \u83b7\u53d6\u7b2c\u4e00\u884c\u7684\u5217\u6570\n\nSystem.out.println(\"\u884c\u6570\uff1a\" + rowCount);\nSystem.out.println(\"\u5217\u6570\uff1a\" + columnCount);\nSystem.out.println(\"\u6570\u7ec4\u4e2a\u6570\uff1a\" + rowCount * columnCount);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>\u884c\u6570\uff1a3\n\u5217\u6570\uff1a3\n\u6570\u7ec4\u4e2a\u6570\uff1a9<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\u600e\u4e48\u83b7\u5f97\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u4e2a\u6570\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a\u2460 \u4f7f\u7528 array.getlength() \u8fd4\u56de\u884c\u6570\uff0c\u518d\u83b7\u53d6\u6bcf\u4e2a\u884c\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\uff1b\u2461 \u4f7f\u7528 length \u5c5e\u6027\u5206\u522b\u83b7\u53d6\u884c\u6570\u548c\u5217\u6570\u3002\u901a\u8fc7\u8fd9\u4e24\u65b9\u6cd5\uff0c\u53ef\u4ee5\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\uff0c\u5373\u884c\u6570\u4e0e\u5217\u6570\u7ec4\u6210\u7684\u4e58\u79ef\u3002 Java\u4e2d\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570 \u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\uff0c\u5373\u8868\u793a\u6570\u7ec4\u4e2d\u7684\u5b50\u6570\u7ec4\u7684\u6570\u91cf\u3002\u83b7\u53d6\u6b64\u4fe1\u606f\u7684\u65b9\u6cd5\u5982\u4e0b\uff1a \u4f7f\u7528Array.getLength()\u65b9\u6cd5 \u5bf9\u4e8e\u4e8c\u7ef4\u6570\u7ec4\uff0cArray.getLength()\u65b9\u6cd5\u8fd4\u56de\u6570\u7ec4\u4e2d\u7b2c\u4e00\u7ef4\u7684\u957f\u5ea6\uff0c\u5373\u884c\u6570\u3002\u56e0\u6b64\uff0c\u8981\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u7684\u4e2a\u6570\uff0c\u9700\u8981\u518d\u83b7\u53d6\u6bcf\u4e2a\u884c\u4e2d\u7684\u5143\u7d20\u4e2a\u6570\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int rowCount = array.length; \/\/ \u83b7\u53d6\u884c\u6570 for (int rowIndex = 0; rowIndex &lt; rowCount; rowIndex++) { int columnCount = array[rowIndex].length; \/\/ \u83b7\u53d6\u6bcf\u4e00\u884c\u7684\u5217\u6570 \/\/ \u6839\u636e\u9700\u8981\u8fdb\u884c\u64cd\u4f5c } \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528length\u5c5e\u6027 \u5bf9\u4e8e\u6570\u7ec4\u4e2d\u6bcf\u4e00\u7ef4\uff0c\u53ef\u4ee5\u4f7f\u7528length\u5c5e\u6027\u83b7\u53d6\u5176\u957f\u5ea6\u3002 int rowCount = array.length; \/\/ \u83b7\u53d6\u884c\u6570 int columnCount = array[0].length; \/\/ \u83b7\u53d6\u7b2c\u4e00\u884c\u7684\u5217\u6570 \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b \u5047\u8bbe\u6709\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\uff1a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-66800","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=66800"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66800\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}